Noctua Nf-A4x20 Flx

40 mm, 1 x
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Product details

The NF-A4x20 is a fan that utilizes cutting-edge aerodynamic design features such as Flow Acceleration Channels and Noctua's AAO frame system. The FLX version offers three speed settings (5000/4400/3700 rpm) through the included low-noise adapters, providing full flexibility between maximum airflow and near-silent operation. Its exceptional smoothness, the SSO2 reference-class bearing, and Noctua's proven premium quality make the NF-A4x20 an exquisite choice for the highest demands.

Key specifications

Fan dimension
40 mm
Items per sales unit
1 x
power connector
3-pin
Airflow
9.40 m³/h
Max. noise level
14.90 dB
LED colour
without LED
Item number
6399991

General information

Manufacturer
Noctua
Category
PC fans
Manufacturer no.
NF-A4x20 FLX
Release date
4.8.2017
Sales rank in Category PC fans
25 of 2341
External links
Manufacturer's site (de)

Colour

Colour
Beige, Brown
Exact colour description
Beige, Brown

Fan properties

Fan dimension
40 mm
PC fan type
PWM fan
Fan type
Silent
Max. Speed
5000 RPM
Max. noise level
14.90 dB
Airflow
9.40 m³/h
Static pressure
2.26 mmH20
LED colour
without LED
Fan mounting
Screws
Fan bearing type
SSO2
Speed regulation
Fan control

Connections

power connector
3-pin

Power supply

Power consumption (active)
0.60 W
input voltage
12 V
Cable length
0.30 m
Electric current
0.05 A

Scope of delivery

Items per sales unit
1 x
Scope of delivery
Screws, Y-split cable

Voluntary climate contribution

CO₂-Emission
Climate contribution

Product dimensions

Length
40 mm
Width
40 mm
Height
20 mm
Weight
180 g

Package dimensions

Length
21.20 cm
Width
15.30 cm
Height
3.50 cm
Weight
178 g

30-day right of return
6 years Warranty (Bring-in)
12 additional offers

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Goes with

Reviews & Ratings

Warranty score

How often does a product of this brand in the «PC fans» category have a defect within the first 24 months?

Source: Digitec Galaxus
  • 7.be quiet!
    0.2 %
  • 7.CaliHeat
    0.2 %
  • 7.Noctua
    0.2 %
  • 7.Noiseblocker
    0.2 %
  • 11.Arctic
    0.3 %

Warranty case duration

How many working days on average does it take to process a warranty claim from when it arrives at the service centre until it’s back with the customer?

Source: Digitec Galaxus
  • 1.Corsair
    0 days
  • 1.Lian-Li
    0 days
  • 1.Noctua
    0 days
  • 1.NZXT
    0 days
  • 1.Phanteks
    0 days

Return rate

How often is a product of this brand in the «PC fans» category returned?

Source: Digitec Galaxus
  • 14.Cooler Master
    3.3 %
  • 15.be quiet!
    3.4 %
  • 15.Noctua
    3.4 %
  • 17.Akasa
    3.5 %
  • 18.Corsair
    4.1 %
Source: Digitec Galaxus